1997/07/24 by F. Fucito, A. Tanzini, Fucito, F. +9
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/9707209
58 pages, LateX2e file
arxiv created 1997/07/24 · arxiv updated 2009/11/30
Lectures given at the First School on Field Theory and Gravitation, Vitória, Esp'ırito Santo, Brazil, 15-19 April, 1997.